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Relay Wiring For Fusebox

Discussion in 'Early CJ5 and CJ6 Tech' started by FinoCJ, Dec 7, 2018.

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  1. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    this is the plan - I believe the solenoid would want to move in opposite directions when the polarity is reversed - so in one case it should cause it to move to close the circuit (and 'click') and in the other case it would want to move opposite, but it shouldn't be able to move in that direction and will do nothing. My fuel tank switching solenoid does exactly this.
     
    FinoCJ, Jan 17, 2019
    #21
    Sierra Bum likes this.
  2. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    FWIW - I tested the CH solenoid this morning, and the polarity of 'activating' current does not matter - it moves the switch to close the curcuit in either case. Now if I can just find the damn keys to the jeep so I can test the key ignition circuits. arghhh.....
     
    Last edited: Jan 19, 2019
    FinoCJ, Jan 19, 2019
    #22
  3. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    It should be normally open, and closed when the current flows through the relay coil. If you bought a normally closed relay, you can't use it. The most common Bosch-type relays have both a NO and NC contact, and you can use either, depending on your needs. Since it's a DC circuit, you can measure the resistance of the coil to get the current demand. I would expect it to be something like 250 ohms. V/R = I, 12/250 = 48 mA.
     
    Last edited: Jan 19, 2019
    timgr, Jan 19, 2019
    #23
  4. tarry99

    tarry99 Member

    If you have the time and patience.........I like to solder everything and then heat shrink a cover on to seal the end........I only crimp wires when it's a quick fix.....much better to solder for a long term positive connection...........

    Also pay attention to the wire you buy.....I like the CSA TEW 105c stranded wire which is Machine tool wire for wet , dry , oil or coolant locations.
    Temperature Rating: -40°C to +105°C
    Voltage Rating: 600V, AWM
    Passes UL VW-1 Flame Test

    DESCRIPTION:
    Stranded Tinned Copper, Color Coded Polyvinylchloride Insulation, .032" Nominal Insulation Thickness

    [​IMG]
     
    tarry99, Jan 19, 2019
    #24
  5. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    you are correct Tim...edited my prior post
     
    FinoCJ, Jan 19, 2019
    #25
  6. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    My patience is done for today....Here is the solenoid relay...I used 6awg for the high current wire. I couldn't find the ideal all conditions wire...thanks for the link tarry. May have to order it online....fuse block is on the opposite side of the firewall. Will finish stuff up another time...can only spend so many hours doing tedious stuff.

    [​IMG]
     
    FinoCJ, Jan 19, 2019
    #26
    Sierra Bum likes this.
  7. Oldriginal86

    Oldriginal86 Member

    To keep from arcing and sparking down to a minimum you might want to put rubber protective boots on the large posts of the solenoid. Looking good.
     
    Oldriginal86, Jan 19, 2019
    #27
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